Properties of the Number -2257

Two Hundred Fifty-Seven

Basics

Value: -2258 → -2257 → -2256

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 37 × 61

Divisors: 1, 37, 61, 2257

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100011010001

Octal: -4321

Duodecimal: -1381

Hexadecimal: -8d1

Square: 5094049

Square Root: 47.50789408087881

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Expansion of exp( ∑_n>=1 -σ(6·n)*xⁿ/n ) in powers of x. A283164

First sequence in solution to congruent number 5 problem. A129206

Dirichlet g.f.: 1 / (ζ(s) * ζ(s-1) * ζ(s-2)). A328254

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 147", based on the 5-celled von Neumann neighborhood. A270293

Central polygonal numbers: a(n) = n² - n + 1. A2061

Sum of divisors of square numbers. A65764

Number of sublattices of index n in generic 3-dimensional lattice. A1001

a(n) = 4·n² - 10·n + 7. A54554

a(n) = a(n-1) + a(floor(n/2)), a(1) = 1. A33485

Numbers that are the sum of 10 positive 6th powers. A3366